The graph, pictured above, shows how remarkably stable Android has been in adding new users, as it rarely swings too far from its linear path upward. Evans estimates that Google is now activating around 1.4 million Android devices per day, a slight increase from the 1.3 million Android devices it was activating in September. While this may indicate the growth curve is “flattening” a bit, as Evans writes, it still shows that Android is on a steady march to reach 1 billion activations by the end of 2013.